Door lock



H. D. ROLPH May 5, 1942.

DOOR Lock 3 Sheets-Sheet 1' Filed Feb. 17, 1940 ATTORNEY KAN May 5,1942. H. D. ROLPH 2,282,213

DO OR LOCK Filed Feb. 1'7, 1940 3 Sheets-Sheet 2 INVENTOR flaweyfl 202p ATTORNEY May 5, 1942.

v H. D. RQLPH noon LOCK Filed Feb. 17, 1940 s Sheets-Sheet :5

Mama Patented May 5, 1942 noon LOOK Henry D-. Rolph, Stamford, Conn., assignor to The Yale & Towne Manufacturing Company, Stamford, Conn., a corporation of Connecticut Application February 17, 1940, Serial No. 319,450

11 Claims. (c1. 70-146) This invention relates to a door lock, more especially to a door lock of the tubular type.

More particularly, my invention relates to a lock of the type having a latch bolt housing adapted to be inserted into a bore extending inwardly from the edge of a door, and a latch bolt operating assembly inserted through a transverse bore in the door and into eng-agement with the latch bolt housing,

The door lock of my invention is somewhat related to that shown in the application of Charles Ledin for a Lock, Serial No. 228,222, filed September 2, 1938, now Patent No. 2,226,499, granted December 24, 1940. As in the Ledin application, I use an inside knob equipped with a push button and an outside knob adapted to be locked against operation when the push button is depressed. Rotation of the inside knob of my lock moves the push button out of its depressed position, and releases the outside knob for free rotation. The important feature of my inven-' tion is the arrangement of the means whereby the push button and push rod with which it is connected are operated, and in turn control the operation of the lock.

More specifically, my invention utilizes a spin dle surrounding the push rod and to which the inside and outside knobs of my lock are secured. Preferably, the spindle is rotated with the push rod by the inside and outside knobs for retracting the latch bolt, a; portion of the push rod itself being utilized preferably for retracting the latchbolt. A feature of my invention is the utilization of the push rod for locking the spindle against rotation through the entry of a portion of the push rod into interlocking relation with means in the new and novel latch bolt housing of my lock. The inside knob, while adapted to rotate the spindle, is capable of. some motion relatively to the spindle, and this motion is utilized as in the Ledin application, for moving the push rod out of locking position.

A further feature of my invention is the arrangement of a lock in the outside knob for moving the push rod into release position by zgi cluded in the patent monopoly to be granted me. 1

Referring now to the drawings, Fig. 1 is a horizontal section showing the lock of my in-- vention applied to a door and with the latch bolt ;in locking position. Fig. 2 is a front view of the outside knob, and Fig. 3 is a front view of the inside knob. Fig. 4 is a section taken along lines 44 of Fig. 1. Fig. 5 is an enlarged section taken substantially along the same lines as '1 Fig. 4. Fig. 6 is a section taken along lines 66 of Fig. 1. Figs. 7, 8 and 9 are sections taken along lines 1-1, 88 and 9-9, respectively, of Fig.4. Figs. 10, 11 and 12 are sections taken along lineslO-lll, H--I|, and l2-I2, respectively, of Fig. 5. Fig. 13 is an exploded View of the lock assembly showing the several parts thereof.

Referring now more'particularly to the drawings and especially Fig. 1, I show a latch bolt housing 10 mounted in a bore ll extending into the door from the edge thereof. The housing 10 contains a latch bolt 12 which is adapted toenter the strike l3 secured to the jamb M of the The latch bolt is projected into locking door.

45 position by .a spring 15, whose relation to the latch bolt is probably best shown .in Fig. 6.

Referring now to Fig. 6, the tail of the latch bolt I2 is designated byreference numeral l6 and terminates in lugs I! and I8. Lug l1 coop- 39 crates with a retracting cam I9, while lug I8 cooperates with an oppositely related retracting cam 20. The retracting cam I9 is pivoted about a pin 2|, while the retracting cam 20 is pivoted about a pin 22 extending from the housing I0. A rollback 23 having projecting lugs 23a and 23b is mounted within the latch bolt housing I0, and

when rotated in a clockwise or counter-clockwise direction, will actuate one or the other of the retracting cams l9 and 20 to retract the latch 40 bolt through one or the other of the lugs l1 and l8 of the latch bolt tail l6.

Referring now to Fig. 13, there is there illustrated the rollback 23, and to each side thereof there. is shown a plate 24. Each plate 24 is equipped' with an abutment 25 on the inside thereof on which the rollback 23 is mounted through the intermediary of the countersunk portions 26 formed on each side thereof. Each of the plates 24-is self-retained against rotation to within the casing I0, and is maintained against sliding due to? the coaction of its part 25 with the rollback 23.

1 It will be well to note at this point that the rollback 23 is formed with a groove 21, and that 7 each of the portions 25 of the plates 24 is grooved at 25a. The rollback 23 has an additional groove 21a so that it may be readily reversed. As will be readily apparent also, from the description of'the latch bolt housing and the mechanism therein contained, the entire assembly so far described is reversible.

I shall now describe the push rod, or control rod as it may be called, which is probably best illustrated in Fig. 13 Where it is designated by reference numeral 28. A push button 29 is integrally with the push rod 28 so that, in effect, the push button and push rod are one piece after assembly. The push button 29, of course, lies within the inside knob, designated by reference letter K while the other end of the push rod lies in the shank sleeve of the outside knob, designated by reference letter K. the push rod 28 carries a somewhat less than semi-circular cam portion 3| in which is formed a cam groove 32, it being the function of the cam groove 32 to cooperate with a lug hereinafter described, to efiect longitudinal movement of the push rod in a direction reverse to the movement imparted thereto by depression through push button 29.

Integral also with the push rod 28 are a re-. lease pin 33 and the rollback operating lug 34. This lug 34 is adapted to lie within the slot 2'! of the rollback 23 to operate the rollback through rotation of the push rod 28. It is also a function ofthe lug 34 to lie within one of the slots 25a of the abutment 25 of one of the plates 24 to lock the push rod 28 against rotation, as will be indicated presently. Surrounding the push rod 28 is what I term a spindle 35 which has formed therein a slot 36 in which ride the pin 33 and the lug 34 of the push rod for maintaining the push rod and'spindle against rotation relatively to one another.

A ball 31 is projected by spring 31a from the bore 311) of the push rod into a bore 38 or a bore 39 ofthe spindle 35, thus yieldingly retaining the push rod 28 in one or the other of two different longitudinal positions relatively to the spindle 35,

it being obvious that while the push rod 28 is not rotatable relatively to the spindle 35, it is'slidable relatively thereto. tures of. construction on both the push rod 28 and the spindle 35, they will be described with relation to the remaining parts of the lock hereinafter.

Referring now to the inside knob K it will be noted that it is equipped with a shank portion 40 in which are mounted the parts 4|, 42, and 43, shown best in the exploded view of Fig. 13. In assembling the parts 4| ,42 and 43 relatively to the inside knob shank 40, the cam part 43 is first inserted within the part 42 so that a hole 43a of the part 43 lines up with the hole 42a of the part 42. The two parts 42 and 43 when assembled within the shank 40 have their bores 42a and 43a aligned with bore 46a of the knob shank 46, and are secured in that position by a screwj 44. Thus, upon assembly, the knob shank 40, the

part 42 and the cam part 43 will be fixed against 3 3 any rotation relatively to one another, and will,

1 in effect, be one piece. For the purposes of the I invention, it may therefore be considered that f the parts 49, 42 and 43 are integral. 2

Before the part 42 is inserted into the knob j shank 43, the part 4|, which I shall term the 1 spindle actuator, is moved over ,the smaller end sleeve portion 45 of the part 42. The screw 46 is threaded into the bore 41a of, the spindle actua- While there are further feal threaded on to the screw threaded pin 36 formed w The outside end of 4| as determined by the length of the slot 41., but

is held against longitudinal movement relatively thereto.

A lug 48 extends from the spindle actuator 4| and occupies a position under a somewhat similar lug 49 extending from the part 42. A coil spring is wound-about the portion of the part 42 and has its ends 50 and 5| so arranged relatively to the overlying lug 49 of the part 42 and the underlying lug 48 of the spindle actuator 4|, as to maintain the spindle actuator yieldingly in posi-.

tion, with the screw 46 centrally related to the slot 41, as is probably best illustrated in Fig. 9.

It will be noted that thespindle actuator 4| is slotted as at 52 for the housing of a lug 53 depending downwardly from the spindle 35. Because of this relationship of the parts, it will be obvious that the spindle 35is always held for rotation with the spindle actuator 4|, and that therefore, the spindle actuator 4| is always maintained for rotation integrally with the push rod 28. The spindle 35 is slotted as at 54 for the entryof the end 54a of a screw 55 carried by the knob shank 40. It will be obvious that the screw 55 prevents longitudinal movement of the inside knob K relatively to the spindle 35, but that rotation of the knob K relatively to the spindle is possible within the limits of the slot 54. This limited rotation is the same as that allowed by the screw 46 relatively to the. slot 41 of the part 42, and is of course resisted by the spring S, as has already been described.

It will be remembered that the push rod 28 is equipped with a release pin 33; which pin 7 is adapted to cooperate with cam surfaces 56 formed on the cam part 43, as is probably best illustrated in Fig. 13. Also, the part 43 is rotatable with the knob K and relatively to the push rod 28 and spindle 35 when the push rod is locked against rotation. Moreover, when the push rod 28 is depressed into locking position, the pin 33 lies opposite the cam surfaces 56, where the cam surfaces are relatively close together. The rotation of the knob K as above set forth,'will cause one of the cam surfaces 56 to coact with'the pin 33 to move the push'rod outwardly and into release position. This operation will be described more fully presently.

It-may be well now to refer to Figs. 7, 8, 9 and 10 to better describe the relationship of the parts. Referring first to Fig. '7, we see the knob shank 46 into which is entered the screw 55, with the end portion 54a of the crew within the slot 5401' the spindle 35. The lugs 53 of the spindle is shown within the groove 52 of the spindle actuator 4|. It is obvious here that the knob is rotatable relatively to the spindle but cannot move longitudinally relatively to the spindle. It is obvious also that the spindle 35 and the spindle actuator 4| are held against rotary movement relatively to one another. The push rod is shown by reference numeral 28, centrally located relatively to the assembly.

Referring now to Fig. 8, we see first the knob shank 46 surrounding the actuator 4|. We see further the screw 46 threaded intothe bore 4| a of the actuator 4| and working in the slot 4'! of the portion 45 of the part 42. We then see within the part 42 the spindle 35 and the. ball 31 pressed by the spring 31a from push rod 28 into the bore 38 of the spindle 35 to maintain thev push rod 28 in its unlocking position relatively to the spindle.

Referring now to Fig. 9 once again, we see there the knob shank 40 surrounding the part 42. We see also the ends 50 and of the coil spring S maintaining aligned the lugs 49 and 48 of the parts 42 and 4|, respectively.

Before describing Fig. 10, it may be well to indicate through reference to Figs. 1 and 4, that in the unlocked position of the lock, the end of push button 29 forming part of the push rod 28 is maintained somewhat outwardly of the inside knob K In this position of the parts, the pin 33 of the push rod 28, which protrudes through the slot 36 of the spindle 35, lies near the left hand portion of the opposite cam surfaces 56 of the cam part 43. When the push button 29 is depressed as shown in Fig. 5, the pin 33 is carried to the right hand end of the cam part 43,

' is the position of the parts also illustrated in Fig.

10, where we see the inside knob shank 40 in the interior of which is mounted the part 42, to which is fixed the cam part 43. The two cam surfaces 56 are shown with relation to the pin 33, it being obvious that when the cam part 43 and its cam surfaces 56 are rotated relatively to the pin 33, the pin 33 together with its push rod 28 will be moved back from the position of Fig. 5 to the position of Fig. 4.

Referring now to Fig. 11, the rollback 23 is shown with the retracting lug 34 of the push rod 28 within its slot 21. We see also the lug 23a extending from the rollback 23 into engagement with the latch bolt retracting cam 20. There is also shown one of the two plates 24.

I shall now describe the outside knob K and its assembly relatively to the remaining parts. Mounted within the sleeve or shank portion 51 of the outside knob K is a sleeve 58. This sleeve 58 has a bore 58a which, in the assembled relation of the parts, is adapted for alignment with a bore 59 of the spindle 35. A screw 60 is adapted to enter a bore 51a. of the outside knob shank 51, the bore 58a of the sleeve 58 and the bore 59 of the spindle 35, with the end 69a ofthe screw 66 entering a slot 6| of the push rod 28. With the screw '60 thus inserted, it will be appreciated that the outside knob K will be assembled through its shank 51 to the sleeve 58 and the spindle 35, so that the knob and spindle will rotate as a single unit and may be considered as though made of one piece.

The push rod 28, while capable of sliding movement relatively to the outside knob, as limited by the length of its slot 6|, will be incapable of any rotary movement whatsoever relatively to the outside knob.

Mounted within the knob is a sleeve 62 having a pin 63 extending downwardly therefrom into a position where it can enter one end or the other of cam groove 32 formed in the cam portion 3| which was described as integral with the push rod 28. The inner end of the sleeve 62 is slotted as at 64 for cooperation with the lug 65 of the key plug 66 of a cylinder lock 61. sleeve 58 has threaded holes 68 into which are inserted screws 69 which enter shallow bores of the cylinder lock 61, thus securing the cylinder lock to the knob K its sleeve 58, and the spindle 35.

I shall now describe the relationship of the parts in Fig. 12. There I have illustrated the outside knob shank 51 surrounding the sleeve 58,

Incidentally, the.

The sleeve 62 is shown together with itspin 63 in its relation to "the cam abutment 3| formed integrally with'the'push rod 28. The relationship of the parts illustrated in Fig. 12 is the same, of course, as the relationship of the parts illustrated in Fig. 5. Rotation of the sleeve 62 by the key plug in a counterclockwise direction, looking at Fig. 12, will bring the lug 63 into the end 32a of the cam groove32, and further rotation of the sleeve will of course move the push rod to the left from its locking position of Fig. 5, all as will be quite apparent.

Having thus described the various parts of my invention and their relationship, I shall now attempt to point out their operating relationship by describing one complete operation of my locking mechanism. Referring to Figs. land 4, where the outside knob K is shown released, and the push button outwardly of the inside knob K it will be noted that the retracting lug 34 of the push rod 28 protrudes through the slot 36 of the spindle 35 into the groove 21 of the rollback 23. The pin 33 of the push rod also protrudes through the sl0t'36 of the spindle 35, and is near the left end of the cam part 43 and its opposed cam surfaces 56;

The inside knob K is capable of some rotary movement relatively to the spindle actuator 4|,

against the pressure of the'spring S, as determined preferably by screw 46 lying in slot 41 of the part 42. Knob K is, however, through cooperation of its screw with the slot 54 of the spindle 35, incapable of any sliding movement relatively to the spindle and is therefore retained on the spindle. Rotation of the inside knob K will first wind the spring S, and will then rotate the spindle actuator 4|, which through cooperation with the lug 53 of the spindle. will rotate the spindle, and'therefore the push rod 28 and m sleeve 58, and the spindle 35. It will of course be remembered also that the end a of the screw 60 fits within the slot 6| of the push rod 28.

With the parts in the position of Figs. 1 and 4,

should it be desired to lock the outside knob against rotation, it is merely necessary to depress the push button 29 into its position of Fig.

5. When this is done, the retracting lug 34 of the push rod moves out of the groove 21 of the rollback'23 and into the groove 25a of the portion 25 of one of the plates 24. It is obvious that in this position of the parts, the push rod and the spindle 35 will be incapable of any rotation whatsoever. Since the outside knob K is, for all practical purposes, integral with the spindle 35, it also will be maintained against any rotation whatsoever. 7 I

Incidentally, the ball 31 extending from the push rod will have moved into cooperation with the hole 39 of the spindle 35, yieldingly maintaining the push rod and push button 29 in the position of Fig. 5. It will be well also to indicate that in the position of the parts in Fig. 5, the pin 33 extending downwardly from the push rod 28 through the slot 36 of the spindle 35 will lie at the right hand end of the cam part 43, and therewhich may be considered as part of the knob.

surfaces 56. I

1 In this position of the, parts, while the outside;

knob is lockedagainst rotation because it isfixed 'to the spindle, 35, the inside knob is capable of rotation. relatively to the spindle 35 and the spindle actuator 4|. Such rotation of the knob K willrotate its shank 40, and therefore the parts 42 and", while the spindle actuator 4| remains stationary, being locked to the push rod 28 and the spindle 35 against rotation. This ro-' tation of the knob and the cam part 43, will cause one or the other of the cam surfaces 56 to contact the pin 33, camming the push rod from the position of Fig. 5. to the position of Fig. 4, all-as, will be quite apparent.

In this way, when the outside knob is locked, should anyone attempt to retract the latch bolt from the inside, he will first release the outside knob. Further rotation'of the inside knob will of course move the spindle actuator 4| and ro-' tate the spindle to retract the latch.

I shall now describe the operation o-f'the parts'are in the position of Fig.5. It-willbe noted in Fig. 5 that with the outside knob locked, the cam groove 32 of the push rod is in the particularrelation toLpin 63 of the sleeve already described. If the key plug :66 of the cylinder 61 be now rotated, the lug 65through cooperation with the slot 64, will rotate the sleeve 62 relatively to the knob, causing the pin 63 to enter the end 32a of the cam groove 32 to effect a move- I ment to the left of the push rod 28. This brings the push rod into the position of Fig. 4, in which position the outside knob will once again-be free for rotation with the spindle to retract the latch bolt.

I believe that the opjeration of the particular form of my invention here described will now be clear to those skilled in theart. It should be appreciated that many changes in the construction of the lock of my invention will readily occur to those skilled in the art. I do not wish, therefore, tobelimited in *my, monopoly to the particular structure I have herein shown as best embodying-my invention; i

I claim:

1. In a lock spindle, an outside knob fixed to one end of the spindle, an inside knob mounted on the other end of thespindle, means whereby said inside knob rotates-a predetermined degree relatively to said spindle prior to transmitting rotation to said spindle a rod within said spindle and movable longitudinally thereof, a push button fixed on theinside end of said rod extending through an opening in the inside knob whereby it may be depressed, means .whereby said rod when depressedlocks said spindle against rotation, and means whereby rotation of said inside knob said predetermined degree relatively'to said spindledistance and then moves integrally with said spindle, a rod within said spindle and movable longitudinally thereof, a push button on the inside end of said rod extending through an opening in the inside knob whereby it may be depressed, means whereby said rod when depressed cylinder lock to release the outside knob when the of the classdescribed, a hollow position.

3. Ina-look of the class described, a hollow I spindle, an outside knob fixed on said spindle,

an inside knob mounted on the spindle, means whereby said inside knob rotates a predetermined degree relatively to said spindle prior to transmitting rotation to saidspindle, a rod within said spindle and rotatable therewith while movable longitudinally thereof, a latch bolt,

means whereby said rod when rotated with said spindle retracts said latch bolt, means whereby said rod when depressed locks said spindle and said rod against rotation, a push button on the inside end of said rod extending through an opening in the inside knob whereby said rod may be depressed, and means whereby rotation of said inside knob said predetermined degree relatively knob moves relatively to said spindle for a short distance and then;m,oves integrally with said spindle, a rod within said spindle and rotatable therewith while movable longitudinally thereof,

a latch bolt, means whereby said, rod when rotated with, said spindle retracts said latch bolt,

means whereby said rod when depressed locks said spindle and said rod againstrotation, a push button on the inside end of said rod extendin through an opening in the inside knob whereby it may be depressed into spindle locking position, and means whereby rotation. of said inside knob relatively to said spindle moves saidrod out of its-depressed position. I

5. Ina lock of the class described, a hollow spindle, an outside knob secured on one end of said spindle, an inside knob mounted on the other end of said spindle, a rod within said spindle, a lug on said rod protruding through a slot in the spindle whereby said rod and spindle rotate as a unit while allowing sliding movement of said rod in said spindle, a latch bolt, means whereby said lug retracts said latch bolt through rotation of said spindle when said rod is in one position relatively to said spindle, means whereby said lug locks said spindle and rod against rotation when said rod is in a second position relatively to said spindlaineans secured to said rod and extending through an opening in the inside knob whereby said rod is moved to its sec 0nd or locking position, said inside knob having a part thereof fixed to said spindle and a knob portion capable of limited rotation relatively to said part, and means whereby said knob portion said latch bolt, means whereby said rod is moved longitudinally in said spindle to lock said spindle and outside knob against rotation, a look within said outside knob, a key plug in said lock rotatable relatively to said knob, and a pin and groove connection between said key plug-and rod whereby rotation of said key plug moves said rod longitudinally of said spindle and out of locking position.

7. In a lock of the class described, a hollow spindle, an outside knob fixed to one end of said spindle, an inside knob mounted on the other end of said spindle, means whereby said inside knob rotates a predetermined degree relatively to said spindle prior to transmitting rotation to said spindle, a rod mounted within said spindle and for longitudinal sliding movement relatively thereto, a latch bolt, means whereby said outside knob and spindle and rod rotate together to retract said latch bolt, 2, push button on the inside end of said rod protruding through a bore in the inside knob whereby said rod is moved longitudinally in said spindle, means whereby said rod when so moved locks said spindle and outside knob against rotation, means whereby rotation of said inside knob said predetermined degree relatively to said spindle moves said rod out of locking position, a lock within said outside knob, a key plug in said lock rotatable relatively to said knob, and means between said key plug and rod whereby rotation of said key plug moves said rod longitudinally out of locking position.

8. In a lock of the class described, a hollow spindle, an outside knob fixed to one end of said spindle, an inside knob mounted on the other end of said spindle, a rod mounted within said spindle and for longitudinal sliding movement relatively thereto, a latch bolt, means whereby said knob and spindle and rod rotate together to retract said latch bolt, a push button on the inside end of said rod protruding through a bore in the inside knob whereby said rod is moved longitudinally in said spindle to lock said spindle and outside knob against rotation, a lock within said outside knob, a key plug in said lock rotatable relatively to said knob, a cam groove formed on the said rod, a rotatable sleeve in said outside knob having a pin for operating in said groove, and means whereby said key plug when rotated, rotates said sleeve to move the rod to release position by engagement of its pin with said cam groove.

9. In a lock of the class described, a hollow spindle, an outside knob fixed to one end of said spindle, an inside knob mounted on the other end of said spindle, a rod mounted within said spindle and for longitudinal sliding movement relatively thereto, a latch bolt, means whereby said outside knob and spindle and rod rotate together to retract said latch bolt, a push button on the inside end of said rod protruding through a bore in the inside knob, whereby said rod is moved longitudinally in said spindle to lock said spindle and outside knob against rotation, a look within said outside knob, a key plug in said lock rotatable relatively to said knob, a cam groove formed on the said rod, and means including a pin adapted to enter said groove,rotated by said key plug to move said rod longitudinally to release position.

10. In a lock of the class described, a hollow spindle, an outside knob fixed to one end of said spindle, an inside knob mounted on the other end of said spindle, a rod mounted within said spindle and for longitudinal sliding movement relatively thereto, a latch bolt, means whereby said knob and spindle and rod rotate together to retract said latch bolt, a push button on the inside end of said rod protruding through a bore in the inside knob, whereby said rod is moved longitudinally in said spindle to lock said spindle and outside knob against rotation, a look within said outside knob, a key plug in said lock rotatable relatively to said knob, cam and groove connecting means between said key plug and rod adapted for engagement in the locked position of said rod and in the unlocked position of said rod, whereby rotation of said key plug moves said rod longitudinally in said spindle.

11. In a lock of the class described, a hollow spindle, an outside knob fixed to one end of the spindle, an inside knob mounted on the other end of the spindle, means whereby said inside knob rotates a predetermined degree relatively to said spindle prior to transmitting rotation to said spindle, a rod within said spindle and movable longitudinally thereof, a push button fixed on the inside end of said rod extending through an opening in the inside knob whereby it may be depressed, means whereby said rod when depressed locks said spindle against rotation, means whereby rotation of said inside knob said predetermined degree relatively to said spindle moves said rod out of its depressed position, a lock within said outside knob, a key plug in said lock rotatable relatively to said knob, and means between said key plug and rod whereby rotation of said key plug moves said rod out of its depressed position.

HENRY D. ROLPH. 

